Mats Klepsland [Thu, 27 May 2021 10:02:55 +0000 (12:02 +0200)]
thresholds: Fix buffer overflow in threshold context
th_entry is resized using ThresholdHashRealloc() every time a rule with
a threshold using by_rule tracking is added. The problem is that this is
done before the rules are reordered, so occasionally a rule with by_rule
tracking gets a higher signature number (after reordering) than the
number of th_entries allocated, causing Suricata to crash.
This commit fixes this by allocating th_entries after all the rules are
loaded and reordered.
Backtrace from core dump:
Program terminated with signal SIGSEGV, Segmentation fault.
#0 0x000000000051b381 in ThresholdHandlePacket (p=p@entry=0x7fb0080f3960, lookup_tsh=0x51, new_tsh=new_tsh@entry=0x7fb016c316e0, td=td@entry=0x14adedf0, sid=9800979, gid=1, pa=0x7fb0080f3b18)
at detect-engine-threshold.c:415
415>---- if (TIMEVAL_DIFF_SEC(p->ts, lookup_tsh->tv1) < td->seconds) {
Jason Ish [Thu, 25 Feb 2021 17:16:28 +0000 (11:16 -0600)]
unix-socket: reset to ready state on startup
As part of commit ea15282f47c6ff781533e3a063f9c903dd6f1afb,
some initialization was moved to happen even in unix socket mode,
however, this initialization does setup some loggers that can only have
one instance enabled (anomaly, drop, file-store).
This will cause these loggers to error out on the first pcap, but work
on subsequent runs of the pcap as some deinitialization is done after
each pcap.
This fix just runs the post pcap-file deinitialization routine to
reset some of the initialization done on startup, like is done after
running each pcap in unix socket mode.
Jason Ish [Tue, 25 May 2021 17:39:31 +0000 (11:39 -0600)]
makefile: don't include the whole test/ directory
Including the whole directory results in .deps files ending up
in the distribution archive which shouldn't be there. Instead
we have to list all the test sources individually.
Luke Coughlan [Mon, 26 Apr 2021 12:05:15 +0000 (13:05 +0100)]
flow/bypass: Properly set the ICMP emergency-bypassed value
Currently the ICMP emergency-bypassed value defined in suricata.conf is
overwriting the UDP value rather than correctly setting it for ICMP.
This commit corrects this bug so that the ICMP value can be set as
expected.
Jason Ish [Thu, 22 Apr 2021 14:52:08 +0000 (08:52 -0600)]
misc: include queue.h before other headers
At least on FreeBSD, some other include is including "sys/queue.h"
which results in FreeBSDs /usr/include/sys/queue.h being picked
up and setting __SYS_QUEUE_H__ so our queue.h is not picked up.
But the FreeBSD queue.h does not have the CIRCLEQ definitions. To
fix just include our queue.h first, which also sets __SYS_QUEUE_H__
preventing the system one from being picked up.
Jason Ish [Thu, 22 Apr 2021 15:38:24 +0000 (09:38 -0600)]
tx: fix unidir tx cleanup
A unidirection protocol parser should only have its transactions
marked as "skipped" if it is skipped in both the TS and TC
directions, otherwise unidir transactions are always considered
skipped and the cleanup will never updates its minimum id.
Victor Julien [Thu, 25 Feb 2021 20:36:27 +0000 (21:36 +0100)]
detect/file.data: fix mixing transforms (http)
Fix handling of file progress tracking for regular file.data along
with transform combinations for the part of the implementation that
uses the HTTP inspection logic.
Fix handling of file progress tracking for regular file.data along
with transform combinations for the part of the implementation that
uses the File API.
Victor Julien [Thu, 25 Feb 2021 19:06:40 +0000 (20:06 +0100)]
detect: track base id for xform buffers
Buffers with transforms are based on the non-transformed "base"
buffer, with a new ID assigned and the transform callbacks added.
This patch stores the id of the original buffer in the new buffer
inspect and prefilter structures. This way the buffers with and
without transforms can share some of the logic are progression
of file and body inspection trackers.
Shivani Bhardwaj [Sat, 13 Feb 2021 12:27:42 +0000 (17:57 +0530)]
dcerpc/udp: improve detection
Lately, Wireguard proto starting w pattern |04 00| is misdetected as
DCERPC/UDP which also starts with the same pattern, add more checks
to make sure that it is the best guess for packet to be dcerpc/udp.
Shivani Bhardwaj [Sat, 20 Feb 2021 06:30:17 +0000 (12:00 +0530)]
dcerpc/udp: remove transmute
The book defines transmute as "This is really, truly, the most horribly unsafe
thing you can do in Rust. The guardrails here are dental floss."
Transmute can result into mind boggling undefined behaviors. Get rid of
it wherever possible.
Ilya Bakhtin [Mon, 15 Feb 2021 17:36:46 +0000 (18:36 +0100)]
protodetect: improve midstream handling
Set "done flag" only if parsers for both directions are not found in a
case of midstream parsers from other direction are tried if nothing is found
for the initial one. "done flag" must be set if nothing is found in both
directions. Otherwise processing of incomplete data is terminated at the very
first try.
Victor Julien [Sat, 13 Feb 2021 16:10:15 +0000 (17:10 +0100)]
host: improve compare logic
The old compare macro would compare all bytes of an address, even
when for IPv4 addresses the additional bytes were not in use. This
made the logic vulnerable to mistakes like in issue #4280.
Eric Leblond [Sun, 24 Jan 2021 21:40:02 +0000 (22:40 +0100)]
suricata: avoid at exit crash in nfq mode
When Suricata was build with ebpf support and when it was started
in NFQ mode, it was crashing at exit because it was trying to free
the device extension.
This patch fixes the issue by only trigger the eBPF related code
when Suricata is running in AFP_PACKET mode.
Victor Julien [Mon, 1 Feb 2021 21:23:47 +0000 (22:23 +0100)]
app-layer: fix transaction cleanup
Fix a 'skipped' transaction early in the list leading to all further
transactions getting skipped, even if they were fully processed and
ready to be cleaned up.
Victor Julien [Thu, 4 Feb 2021 13:48:11 +0000 (14:48 +0100)]
detect: fix heap overflow issue with buffer setup
In some cases, the InspectionBufferGet function would be followed by
a failure to set the buffer up, for example due to a HTTP body limit
not yet being reached. Yet each call to InspectionBufferGet would lead
to the matching list_id to be added to the
DetectEngineThreadCtx::inspect.to_clear_queue. This array is sized to
add each list only once, but in this case the same id could be added
multiple times, potentially overflowing the array.
Jason Ish [Fri, 18 Dec 2020 17:34:30 +0000 (11:34 -0600)]
filestore: fix global counter init in unix socket mode
Move initialization of filestore global counter to PreRunInit,
so they get registered during program initialization, or as
required in unix-socket mode, initialized for each file run.